Rotini with Fresh Mozzarella Pearls Salad

12 oz. pkg. tri-color rotini
1 c. fresh mozzarella pearls, drained
1/2 c. pesto
3 lg. Roma tomatoes, chopped
1 can medium olives, drained, and halved
1/2 c. olive oil
2 Tbsp. balsamic vinegar
1 pkg. Italian dressing seasoning, dry
Salt and Pepper, to taste

Marinate mozzarella pearls in pesto for at least 1/2 hour while assembling other ingredients. Cook pasta according to package directions, drain and cool. Combine olive oil, balsamic vinegar, and Italian dressing mix. Chop tomatoes and half olives. Combine all ingredients, salt and pepper to taste, chill.